X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=org.simantics.district.network.ui%2Fsrc%2Forg%2Fsimantics%2Fdistrict%2Fnetwork%2Fui%2Finternal%2FActivator.java;h=e0e7b47564f917a7ca416eda8286cd0d896e3f44;hb=404106a6a8c09ce3f320e8831894f4fe399662fc;hp=1e7a4d512fae8ba7216410f91c6adec6578416f9;hpb=a2e0d3dfba1245a13dcc8aa23c0188926e2a03c5;p=simantics%2Fdistrict.git

diff --git a/org.simantics.district.network.ui/src/org/simantics/district/network/ui/internal/Activator.java b/org.simantics.district.network.ui/src/org/simantics/district/network/ui/internal/Activator.java
index 1e7a4d51..e0e7b475 100644
--- a/org.simantics.district.network.ui/src/org/simantics/district/network/ui/internal/Activator.java
+++ b/org.simantics.district.network.ui/src/org/simantics/district/network/ui/internal/Activator.java
@@ -1,18 +1,44 @@
-package org.simantics.district.network.ui.internal;
-
-import org.osgi.framework.BundleActivator;
-import org.osgi.framework.BundleContext;
-
-public class Activator implements BundleActivator {
-
-    @Override
-    public void start(BundleContext context) throws Exception {
-
-    }
-
-    @Override
-    public void stop(BundleContext context) throws Exception {
-
-    }
-
-}
+package org.simantics.district.network.ui.internal;
+
+import org.osgi.framework.BundleActivator;
+import org.osgi.framework.BundleContext;
+import org.osgi.util.tracker.ServiceTracker;
+import org.simantics.district.network.ui.breakdown.SubgraphProvider;
+
+public class Activator implements BundleActivator {
+
+    public static final String PLUGIN_ID = "org.simantics.district.network.ui";
+    private static Activator instance;
+    private static BundleContext context;
+    private ServiceTracker<SubgraphProvider, SubgraphProvider> subgraphProviderTracker;
+
+    @Override
+    public void start(BundleContext context) throws Exception {
+        Activator.instance = this;
+        Activator.context = context;
+
+        subgraphProviderTracker = new ServiceTracker<>(context, SubgraphProvider.class.getName(), null);
+        subgraphProviderTracker.open();
+    }
+
+    @Override
+    public void stop(BundleContext context) throws Exception {
+        subgraphProviderTracker.close();
+
+        Activator.instance = null;
+        Activator.context = null;
+    }
+
+    public static Activator getInstance() {
+        return instance;
+    }
+
+    public static BundleContext getContext() {
+        return context;
+    }
+
+    public SubgraphProvider[] getSubgraphProviders() {
+        return subgraphProviderTracker.getServices(new SubgraphProvider[0]);
+    }
+
+}